Adjustable support for chair-backs.



No. M0396.

, P. H. LECKINGER.

ADJUSTABLE SUPPORT Pea 0mm BA-cxs. AYPLXQATXOX III-.21}- APB. 25. 1902.

'IA'TBNTED SEPT. 29, 1903.

UNITED STATES :Phtcntc'd'Sptember 29, I903.

PATENT OFFICE.

I I 4 PHILIP ll. LECNINGER, OF ROCII ESTER, NE\V YORK.

ADJ U STABLE $.U PPO'RT F9 R C HAIR-BAG SPECIFICATION forming part of Letters Patent No. $10,290, dated September 29, 1903.

Application filed April 25, 1502. Sarlll Ho.- 104,651. Go model) I T all whom. it may concern:

. Be it known that I, Pnrmvli. Lncmsosn, a cilizen' of the United States, residing at Rochester, New York, have invented certain Improvements in Adjustable Supports for Chair-Backs, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to improved adjust able supports for chair-backs, which improve ments are fully described and illustrated in the following specification and the accompanying drawings, the novel features thereof being specified in the claims annexed to the said specification.

In the accompanying drawings, Figure 1 is a side elevation. Fig. 2 is a side View of the support. Fig. 3 represents a modification. Fig. 4 is a plan view of the support, partially in section. Fig. 5 represents the clip by which the link is pivoted to the back. Fi 6 represents the movable catch detached. Fig.7 is a section or. the line 7 7, Fig. 4. Fig. 8 represents the movable catch.

,My improvement is applicable to any style of'chnir having a swinging or pivoted back.

In the accompanying drawings, 11 represents the back, which is ordinarily arranged to be lowered to the position indicntgd-hythe dotted lines 12, Fig. 1. A clip is attached to the back and receives the bent end of the link 9. The front end of the linkis attached by a suitable joint, such as a hook and eye 8, to the rear end of asliding rod 7, arranged to move lengthwise of a suitable support 19,

which may he cylindrical, as shown in Figs. 2 and 4, or a bar, as shown in Fig. 3. The

' cylindrical support is attached to the body of the chair by the sockets 2 and the lugs 1. A slot 3 is made in the support, and this slot is providedwith the notches 4 along one of its edges or the perforations 4, Fig. 4, arranged opposite the slot. 0n the rod is attached a bossor head 16, and a. spring 15 is arranged on the-rod hearing at one end against the support and at the other against the boss or against a washer 17, interposed between the spring and boss. The not 18 can he used to hold the boss and washer against 'the thrust of the spring.

11% is a p'in'or catch fixed on the head 16, rotatable on the rod, which maybe provided with any preferred handle or knob 5. back is readily adjusted to auy desired position by disengaging the catch. from one'o f the notches, as represented at 6, Fig. 1, and engaging it in any of others. In order to make the catch engage automatically with the notches, the spring 15 is fnstened'at one end to the support and at the other to the boss and is twisted, so thatit will have a constant tendency to rotate the catch toward the notches. Thc ends of the spring are inserted in holes in the sockets 2 and the boss-1G, as indicated in Fig. 3.

The

25, Fig. 3, is a pin whiclunayhc employed.

instead of mount 18. v

In Fig. 4 the catch 14 is made to slide across the snpport,its point 23 engagingin the notches 4 and a spring 21 being arranged to press it outward by acting on the collar 22. A-curved washer-.34 is attached to the catch 14, being arranged so that by giving the catch a quarter-turn on itsaxisits point will be held in ontofengn "ement with the notches 4, inwhich-case 1'.- hack may be raised or lowered to any desired position, being then secured in place by another quarter-turn of the catch. v

I clairn- 1. The combination with the swinging back of s. chair, of we clip attached to the back,

the link pivotally connected to the clip, the

sliding rod pivot-ally connected to the link, the pin fixed ton head rotatablyconuected to the rod, said head, the cylindrical support secured to the chair-body and provided with a slot having notches along one edge, and the spring secured to the cylindrical support and to the head to cause the engagement of the pin with either of the notches,as and for the purposes setforth.

2. The combination with the swinging bacle of a chair, of the clip. attached to the back,

the link pivotally connected to the clip, the sliding rod pivotally connected to the link, the pin fixed to ahead rotatably connected to the rod, said head, the notched support socured tothe chair-body, and the spring connested to the support and to the head and ar ranged to lift-the back and to automatically engage the pin in any one of the notches, as and for the purposes set forth.

- 3. The/combination with a. frameand a mot Able back portion thereon, of a guide on the frame, a movable member in, the guide attached tn the back portion, pf a locking member carried on the movable member and adapted to engage the guide and a spring yieldingiy supporting the. movable member in the guide and epemting upon the locking 'neniiier to cause its engagement with the guide. V

4. The combination wit-h a frame, a movable back portion" thereon and a guide providod with a rack and attached to one of the parts, of a bar mm abie in the guide and attached to thevother pertiun of the chair, a pawl'on the bar and a swing engaging the pawl to throw it into engagement with the rack and operating to move the bar in one directioniu the guide whenthe pawl is released.

5. Au attachment foradjustable furniture, emboyinga -tubular guide having apertures guide.

therein, ahar movable in the guide add :i

pawl carried on the bar adapted to engage.

'PXIILII H. LECKTNGER Witnesses:

' 650.3. Sammy,

FRANK M. Scnuxman. 

